Scanning – the first stage of replication.
Having made the initial investment of time and expertise in producing a fully gas flowed head, the first stage in re-producing that head is to create an accurate 3-dimensional model of the head.
We use a Rennishaw Cyclone 2 scanning digitiser to digitise our completed, gas flowed head. The Rennishaw scanner is used in many forms of engineering where absolute accuracy is required. These include aerospace airframe and turbine engineering, automotive applications, optics, general engineering, mould and dye manufacture. It is also particularly suited to small volume manufacture such as our process, where extreme accuracy and on-demand manufacture is required.
The scan involves mounting the head on one of our accurately machined jigs using machined dowells to fix the head precisely to the jig. Each jig is selected according to its suitability to scan that particular head. Sometimes a new jig is required and we have to build one. Specific “datum points” are then identified and stored in the computer. Then, the scan process begins.
Scanning is very much an automatic process and takes several hours to do a single head. The scanning itself is done via a spindle probe which physically traces the surface of the head with immense accuracy. It is quite capable of doing a 3-D scan of a fingerprint such is the accuracy. The dimensions of the head are then stored in the computer and can be viewed as a 3D image using the TraceCut CAD/CAM system. This software can then be used to alter the dimensions of any scanned model. We use it to verify the volume of the port and can then modify the port if required.
Click HERE for more info on the TRACECUT software